Importing Checklist Items from another Custom Field

Scripting offers the ability to import value from another custom field, such as Checkboxes, into the Checklist custom field.

Here is a complete example of importing a Checkboxes custom field into a Checklist. A JQL Query is used to retrieve a list of issues to be updated. Both custom fields must have the same Option Names as this script uses the names to correlate values.

import com.onresolve.scriptrunner.runner.customisers.WithPlugin;
import com.atlassian.jira.component.ComponentAccessor;
@WithPlugin("com.okapya.jira.checklist")
import com.okapya.jira.customfields.*;
import com.atlassian.jira.issue.search.SearchProvider
import com.atlassian.jira.jql.parser.JqlQueryParser
import com.atlassian.jira.web.bean.PagerFilter

// Retrieve the Custom Field Type for the Checklist Custom Field
def customFieldManager = ComponentAccessor.getCustomFieldManager();
def checklistCustomField = customFieldManager.getCustomFieldObject("customfield_10001");
def checklistCustomFieldType = (ChecklistCFType) checklistCustomField.getCustomFieldType();

// Retrieve the Checkboxes custom field
def checkboxesCustomField = customFieldManager.getCustomFieldObject("customfield_10002");

// Execute JQL query to find all issues of Project
def jqlQueryParser = ComponentAccessor.getComponent(JqlQueryParser);
def searchProvider = ComponentAccessor.getComponent(SearchProvider);
def issueManager = ComponentAccessor.getIssueManager();
def user = ComponentAccessor.getJiraAuthenticationContext().getLoggedInUser();

def query = jqlQueryParser.parseQuery("project = PROJ"); // Edit this query to suit your case
def results = searchProvider.search(query, user, PagerFilter.getUnlimitedFilter());

// Update all issues Checklist custom field values
results.getIssues().each { documentIssue ->
    def issue = issueManager.getIssueObject(documentIssue.id);

    // Retrieve Checkboxes value for Issue
    def checkboxesValue = (String[]) issue.getCustomFieldValue(checkboxesCustomField);
    if (checkboxesValue == null) {
        // "null" value means nothing is checked on the Checkboxes field. Update the checklist with a null value too.
        checklistCustomFieldType.updateValue(checklistCustomField, issue, null);
        return;
    }

    // Retrieve Checklist value for Issue
    def checklistValue = (ArrayList<ChecklistItem>) issue.getCustomFieldValue(checklistCustomField);
    if (checklistValue == null) {
        log.error("Checklist Custom Field should have a value. You must create Options with the same name as the Checkboxes options.");
        return;
    }

    // Check items that are listed in Checkboxes value, uncheck those that aren't
    for (ChecklistItem item : checklistValue) {
        item.setChecked(checkboxesValue.contains(item.getName()));
    }
    
    checklistCustomFieldType.updateValue(checklistCustomField, issue, checklistValue);
}